diff --git a/src/MySql/AuditDiff.php b/src/MySql/AuditDiff.php
index aed3794..3bf95e6 100755
--- a/src/MySql/AuditDiff.php
+++ b/src/MySql/AuditDiff.php
@@ -22,7 +22,7 @@ class AuditDiff
   /**
    * The metadata (additional) audit columns (as stored in the config file).
    *
-   * @var array[]
+   * @var array<integer,object<array>>
    */
   private $auditColumnsMetadata;
 
diff --git a/src/MySql/AuditDiffTable.php b/src/MySql/AuditDiffTable.php
index 59022ff..c5889b0 100755
--- a/src/MySql/AuditDiffTable.php
+++ b/src/MySql/AuditDiffTable.php
@@ -179,7 +179,7 @@ private function addNotNull($theColumns)
    * @param MultiSourceColumnMetadata      $config Column information from config file.
    * @param MultiSourceColumnMetadata|null $data   Column information from data schema.
    *
-   * @return array
+   * @return bool
    */
   private function compareCollationCharSetName($audit, $config, $data = null)
   {